Boletín de aludes

West Slopes Central

Northwest Avalanche Center
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Peligro de aludes

Tue
Alta montaña
2 · Moderado
Límite del bosque
1 · Débil
Bajo el límite
1 · Débil
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Desactualizado: este boletín caducó 4 months ago. Estás viendo condiciones pasadas, no el boletín vigente.

Lo esencial

Snow and wind may push danger to Moderate by the day’s end. In areas where you find drifts six inchers or deeper over a slick crust, you could trigger an avalanche. Slides will likely be small, but consequences increase if you're above a terrain trap, so consider steering around drifts that exist above features like cliffs, rock or tree patches. 

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1

    Small wind slabs will build as we receive a couple inches of snow Sunday night and Monday. They probably won't be big enough to bury you, but your largest concern is being in terrain with hard surfaces and objects that you wouldn't want to crash into if you're taken for a ride- like trees or rock patches- or sent off a cliff. 

    Drifts tend to build on the leeward side of ridges, around rocky outcroppings or subtle features, and in gullies. They could surprise you by quickly shifting from very soft, non wind-affected surface just inches away. Search for smooth,  "pillowed" drifts, or alternatively, textured surfaces, as ways to identify where wind has drifted snow. Deposits will be shallow, a good time to use small test slopes and hand pits to see how easily the snow slides on the underlying layer. 

    If there's more than a few inches of fresh snow, consider steering around areas where drifts could build above terrain traps. 

    (3/30/2026) A very small human triggered wind slab, where snow deposited around rocks. this is similar to what you might see on Monday.  Photo: Ryan Stoddard

Avalanche Discussion

We're entering a storm cycle,  and if you're going out in the mountains in the next few days, it's time for a mindset shift from the spring snow and weather we've had recently. There may only be a 

We're entering a storm cycle,  and if you're going out in the mountains in the next few days, it's time for a mindset shift from the spring conditions we've had recently. There may only be a couple inches of new snow for Monday, but forecasts are calling for over half a foot on Tuesday, and all of a sudden we're back to full-on winter. 

We may get an inch at upper elevations Sunday night, but precipitation will probably be rain at mid and lower elevations except for an inch or two later in the day. At the start of the day, snow could be wet and sloppy up through mid elevations. This might mean that when temperatures cool, and snow starts falling at mid elevations and the top of lower elevations, it could bond well to the underlying wet layer- but you'll have to investigate as the storm progresses to see how well the new snow is bonded. 

Monday is the major cooling day, and there could be lingering wet snow problems at mid and lower elevations, like triggering small wet slides as the rain further saturates the snowpack, glides, or cornice fall. If you easily sink through softened surface crusts to your knees or deeper, stay away from steep slopes on Monday. Observers in neighboring zones reported saggy cornices, an abundance of glide cracks, and very thin, patchy snow at lower and even mid elevations in recent days.

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